EP 0660548 A1 19950628 - Technique for improving performance in an optical transmission system.
Title (en)
Technique for improving performance in an optical transmission system.
Title (de)
Verfahren zur Funktionsverbesserung eines optischen Übertragungssystems.
Title (fr)
Technique d'amélioration du fonctionnement d'un système de transmission optique.
Publication
Application
Priority
US 17332793 A 19931223
Abstract (en)
The effects of polarization dependent hole burning are reduced by simultaneously launching a first optical signal carrying information and having a first characteristic wavelength and a second optical signal carrying different information and having a second characteristic wavelength, where the first and second optical signals have substantially orthogonal relative polarizations, into the same transmission path as a combined optical signal. The launched optical signals have equal optical power levels. Thus, the noise associated with one optical signal cannot be preferentially enhanced with respect to the information carried by the other optical signal. Furthermore, because the combined optical signal is created by coupling two highly-polarized signals, the poor noise and dispersion characteristics normally associated with non-polarized light sources are avoided. As a result, the effects of PDHB are minimized. <IMAGE>
IPC 1-7
IPC 8 full level
H04J 14/00 (2006.01); H04B 10/02 (2006.01); H04B 10/135 (2006.01); H04B 10/18 (2006.01); H04J 14/04 (2006.01); H04J 14/06 (2006.01)
CPC (source: EP KR)
H04B 10/25 (2013.01 - KR); H04B 10/2572 (2013.01 - EP)
Citation (search report)
- [A] EP 0337644 A1 19891018 - BRITISH TELECOMM [GB]
- [X] DE MARCHIS ET AL: "Phase-noise and polarisation state insensitive coherent optical receivers", IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE AND EXHIBITION, vol. 1, November 1989 (1989-11-01), DALLAS, US, pages 365 - 370
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0660548 A1 19950628; CA 2133132 A1 19950624; JP H07212307 A 19950811; KR 950022296 A 19950728
DOCDB simple family (application)
EP 94309011 A 19941205; CA 2133132 A 19940928; JP 33531694 A 19941222; KR 19940035813 A 19941222